Mineral-screen.



No. 655,|6o. Patented luly 3|, |900.

P. F. PDORBAUGH.

MINERAL SCREEN. (Appncaticn med Aug. 24, 1891i (Np Model.)

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Unirse fsf-raras.y

PATENT orties.

ri-nLLIP E. rooRnAuGi-I, or ALLEGHENY, PENN'sYLvANIA, AssieNoa To THE rirrsnune coAL MINE SUPPLY COMPANY, or PENNSYLVANIA.

MlNRAL-SQA l SPECIFICATION `forming part of Letters Patent No. 655,160, naald July 31,1906.

` Application filed August 24, 1898. Serial No. 689,382. (No model.)

To a/ZZ whom iv' may concer/e1 Beit known that I, PHILLIP F; PooRBAUGH, a citizen of the United States of America,Lr'e siding at Allegheny, in Ithe county of Allegheny and State of Pennsylvania, have invented certain new and useful lmprovementsin Mineral-Screens g and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.V

Myfinvention relates to certain new and useful improvements in mineral-screens, and has for its object to construct ascreen of this character in which the screen-plate and its 'shoe are'arranged at an angle, are vertically adjustable, and are pivotally connected near their upper ends to a suitable supportingframe. The plate and its shoe are operated by suitable mechanism arranged at one end of the supporting-frame.

With the above and other objects in view the invention consists in the novel construction', combination, and arrangement of parts hereinafter more specifically described, and particularly pointed out in the claims hereunto appended.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, wherein like numerals of reference indicate corresponding parts throughout the several views thereof, in which- Figure 1 is a side View of my improved screen. Fig. 2 is a top plan view thereof with a portion of the bottom of screen-plate broken away. Fig. 3 is a cross-sectional View taken on the line x of Fig. 1.

' cross-sectional view of the self-oiling shaft.

Fig. 5 is a top plan view of the4 pivoted adj ustable mechanism for the screen-plate and its shoe. Fig. 6 is a side View of a portion of the operating mechanism for the screen-plate and its shoe. Fig. 7 is a cross-sectional view, partly broken away, taken on the line fy 'y of Fig. 1.

Referring to the drawings by reference-numerals, 1 indicates a suitable supportingframe having journaled in its lower end the operating-shaft 2, which extends transversely across the frame. This shaft 2 also extends screen-plate 10".

Fig. 4 is an enlarged outwardly on each side of the frame 1, as shown, and has mounted on one end the rigid pulley 3 and the loose pulley 4, and on its opposite' end is mounted the fly-wheel 5. Suitably arranged upon the shaft 2 is a pair of op'- eratiug-cams 6, which are secured in position by means of the keepers 2. The inner face of the sides of the frame 1, near the upper end thereof, has secured thereto a pair of guide-A plates .7, which are arranged a suitable distance apart and between which operates an adjustable slide-plate 8, having on its inner face the boss 8' and an upwardly-extending apertured lug 7.

Journaled in the boss S' is a transverselyextending shaft 9, to which isl pivotally secured by means ofthe hangerV 9" (onlyY one shown) the screen-shoe 10, provided on its inner face with the ridge or-` shoulder 10', upon which issecured in any suitable manner the The slide-plates 8 are adjusted by means of the upwardly-extending screw-threaded bolt 11, operating throughthe apertured lug 7', as shown, and also through Ithe guide or keeper12, secured to the outer faceof the sides of the screen-shoe 10. l

12 indicates the adjusting-nut, which is mounted upon the bolt 11, as shown, the movement of which is arrested by means of the guide or keeper 12. A

Secured to the inner face ofeach side of the frame 1 a suitable distance from the slideplate S is a bracket 13, in which is mounted the upwardly-extending screw-threaded bolt This bolt 15 operates through the keeper or guide 14, secured to the outer face of the screen-shoe 10, and has mounted thereon the coiled tension-spring 16 and adj usting-nut 17.

The underneath face of the screen-shoe 10 at its lower end is provided with the downwardly-extending hangers 18' for supporting the self oiling or lubricating shaft 19, which is hollow and has the outlets 22.(only one shown)'for discharging the lubricating material. Connected to one end of the shaft 19 is the lubricating-supplypipe 23, provided with a suitable closure-cap 24.

Mounted upon the shaft 19 over the openings 22 is a pair of antifriction-rollers 20,which are in direct alnement with the cam 6 upon IOO the shaft 2- 21 indicates a rubber bumper, which is also mounted upon the shaft 19 and l between the antifriction-rollers 20. e

The operation of my improved device is as 5 follows: The rectangular frame 1 being arranged at an inclination, `power is applied to revolve the shaft 2, carrying the cams 6 6 therewith, 'elevating the screen 10 by the contact of the cams 6 with the antifrictionto rollers 20. This elevating movement of the screen-shoe will be discontinued` when the smallest portion of the cam is reached, and the screen will then fall upon the bumper 2-1. This movement of the screen-shoe will cause the. material to travel rapidly, as Vwell as screening the same. During the fall of the end of the'screen-shoe the oil contained in the shaft 19 will be agitated and cause a sufficient quantity to be forced up through the 2o openings 22 and lubricate the antifrictionrollers. l 4

It will be evident that to increase or diminish theinclination of the screen-shoe the same ,can `be obtained by the adjustment of the.

z5 nuts 12upon the bolts 11 andv that, if desired to cause the fall or the lowering of the screenshoe more rapidly, the tension of the spring 16 can be regulated by means of the'nut 17, operating against the same. I 3o The action of the top or upper end of the screen plate and shoe above the shaft 9 is a lifting movement and is less active than the longer part below the shaft, as the shoe reeeives the jar from the action of the cams at itsopposite end, this being quite a dierent movement to the lifting motion of the upper end, andthe spread and throw ofthe material may thereby be kept under contro1.`

Having fully described my invention, what 4o I claim as new, and desire to secure by Letters Patent, is-

1. In a screening device, the combination of a supportingframe, an operatingshaft mounted in the lower end thereof, cams suitably mounted on. said shaft, a screen-shoe provided with a suitable screen-plate and opp erated by said cams, guides'connected to the inner face of each side of said frame, slideplates mounted in said guides, a shaft 9 journaled in said slide-plates and with which the 5o shoe is pivotally connected at its upper end, and vertical adjusting means connected to each of s aid slide-plates and to the said screenshoe, substantially as described.

2. In a screening device, thecombination, of a supporting-frame, an operating-shaft mounted in the lower end thereof, cams suitably mounted on said shaft, a screen-shoe yprovided with a suitable screen-plate and operated by said cams, guides connected to the 6o inner face of each side of the frame, slideplates mounted in said guides, a shaft 9 hmounted in said slide-plates and with which the shoe is pivotally connected at its upper end, Vertical adjusting means connected to each ofthe said slide-plates and to each side of the shoe, and a tension device arranged at each side of the said frame and connected to said shoe, substantially as described.

3. The combination of a supporting-frame 7o having an operating-shaft arranged at the lower end thereof, a pair of cams mounted on said shaft, a screen-shoe provided with a'suitable screenplate, guides connected to the inner face of each side of the supporting- 7s frame, a pair of slide-plates arranged to move vertically in said guides', a shaft 9 mounted in said slide-plates and with which the said shoe is pivotally connected at its upper end,

a self-lubricating shaft connected to the under 8c face of the lower end of said screen-shoe, antifriction-rcllers mounted on the lubricatingshaft and adapted to be engaged by the said cams for elevating the screen-shoe, vertical adjusting means connected to the said slideplates and to each side of the screen-shoe, a tension device arranged at each side of the said frame and connected to said shoe, vand a bumper suitably mounted on4 said lubricating-shaft, substantially as described. 9o

In testimony whereof I have hereunto afiixed my signature in the presence of two subscribing witnesses.

PHILLIP POORBAUGH.

Witnesses: i

JOHN GROETZINGER, H. E. DECKER. 

